A mbed-os v5 driver for BM1422AGMV (3 axis magnetic sensor, made by Rohm).
Dependents: rohm-SensorShield-example mbed_blinky
Diff: BM1422AGMV.h
- Revision:
- 0:203311da9813
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/BM1422AGMV.h Mon Feb 18 13:00:55 2019 +0900 @@ -0,0 +1,126 @@ +/* Copyright (c) 2017 Renesas Electronics., MIT License +* +* Permission is hereby granted, free of charge, to any person obtaining a copy of this software +* and associated documentation files (the "Software"), to deal in the Software without +* restriction, including without limitation the rights to use, copy, modify, merge, publish, +* distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the +* Software is furnished to do so, subject to the following conditions: +* +* The above copyright notice and this permission notice shall be included in all copies or +* substantial portions of the Software. +* +* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING +* BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND +* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, +* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +*/ + +#ifndef _BM1422AGMV_H_ +#define _BM1422AGMV_H_ + +#include "mbed.h" + +#define BM1422AGMV_DEVICE_ADDRESS_0E (0x0E << 1) +#define BM1422AGMV_DEVICE_ADDRESS_0F (0x0F << 1) +#define BM1422AGMV_WIA_VAL (0x41) + +#define BM1422AGMV_WIA (0x0F) +#define BM1422AGMV_DATAX (0x10) +#define BM1422AGMV_STA1 (0x18) +#define BM1422AGMV_CNTL1 (0x1B) +#define BM1422AGMV_CNTL2 (0x1C) +#define BM1422AGMV_CNTL3 (0x1D) +#define BM1422AGMV_AVE_A (0x40) +#define BM1422AGMV_CNTL4 (0x5C) + +#define BM1422AGMV_STA1_RD_DRDY (1 << 6) + +#define BM1422AGMV_CNTL1_FS1 (1 << 1) +#define BM1422AGMV_CNTL1_ODR_10Hz (0 << 3) +#define BM1422AGMV_CNTL1_RST_LV (1 << 5) +#define BM1422AGMV_CNTL1_OUT_BIT (1 << 6) +#define BM1422AGMV_CNTL1_PC1 (1 << 7) + +#define BM1422AGMV_CNTL2_DRP (1 << 2) +#define BM1422AGMV_CNTL2_DREN (1 << 3) + +#define BM1422AGMV_CNTL3_FORCE (1 << 6) + +#define BM1422AGMV_AVE_A_AVE4 (0 << 2) + +#define BM1422AGMV_CNTL1_VAL (BM1422AGMV_CNTL1_FS1 | BM1422AGMV_CNTL1_OUT_BIT | BM1422AGMV_CNTL1_PC1) +#define BM1422AGMV_CNTL2_VAL (BM1422AGMV_CNTL2_DREN) +#define BM1422AGMV_CNTL3_VAL (BM1422AGMV_CNTL3_FORCE) +#define BM1422AGMV_CNTL4_VAL (0x0000) +#define BM1422AGMV_AVE_A_VAL (BM1422AGMV_AVE_A_AVE4) + +#define BM1422AGMV_14BIT_SENS (24) +#define BM1422AGMV_12BIT_SENS (6) + +//#define _DEBUG +#ifdef _DEBUG +#undef DEBUG_PRINT +extern Serial pc; +#define DEBUG_PRINT(...) pc.printf(__VA_ARGS__) +#else +#define DEBUG_PRINT(...) +#endif + +class BM1422AGMV +{ +public: + /** + * BM1422 constructor + * + * @param sda SDA pin + * @param sdl SCL pin + * @param addr slave address of the I2C peripheral (default: 0x1C) + */ + BM1422AGMV(PinName sda, PinName scl, int addr = BM1422AGMV_DEVICE_ADDRESS_0E); + /** + * Create a BM1422 instance which is connected to specified I2C pins + * with specified address + * + * @param i2c_obj I2C object (instance) + * @param addr slave address of the I2C-bus peripheral (default: 0x1C) + */ + BM1422AGMV(I2C &i2c_obj, int addr = BM1422AGMV_DEVICE_ADDRESS_0E); + /** + * BM1422 destructor + */ + ~BM1422AGMV(); + /** Initializa BM1422 sensor + * + * Configure sensor setting + * + */ + void initialize(void); + /** + * Get XYZ axis acceleration + * + * @returns XYZ (filled in float[3]) axis acceleration + */ + void get_val(float *data); + +private: + I2C m_i2c; + int m_addr; + void readRegs(int addr, uint8_t * data, int len); + void writeRegs(uint8_t * data, int len); + uint8_t _sens; + /** + * Get XYZ axis acceleration + * + * @returns XYZ (rawdata) axis acceleration + */ + void get_rawval(unsigned char *data); + /** + * Convert XYZ axis acceleration + * + * @returns XYZ (float array [3]) axis acceleration + */ + void convert_uT(int16_t *rawdata, float *data); +}; + +#endif